public static final <K, V> NavigableMap<K, V> emptyNavigableMap ()

Returns an empty navigable map (immutable). This map is serializable.

This example illustrates the type-safe way to obtain an empty map:

     NavigableMap<String, Date> s = Collections.emptyNavigableMap();

<K>    the class of the map keys
<V>    the class of the map values

Returns:  an empty navigable map

Since:  1.8

@implNote Implementations of this method need not create a separate NavigableMap object for each call.